Question

Simplify 3.3√40-4.3√320-3√5​

Answer 1

`\displaystyle\\~~~~3.3√(40)-4.3√(320)-3√(5)=\\\\=3.3√(4*10)-4.3√(64*5)-3√(5)=\\\\=3.3*2√(10)-4.3*8√(5)-3√(5)=\\\\=6.6√(10)-34.4√(5)-3√(5)=\\\\=\boxed{\bf6.6√(10)-37.4√(5)}`